Salt River Project and Arizona Public Service have entered into deals for a total of 300 MW of energy storage that could produce 1,200 MWh per full discharge in Arizona, a state with a booming storage sector, according to recent announcements.

SRP will buy the output from the 200-MW/800-MWh Flatland energy storage project EDP Renewables North America plans to build near Coolidge, Arizona, the public power utility said Monday. SRP expects the $271 million facility will be online next year to help it meet its peak demand periods.

The storage project using Tesla batteries will be built next to EDP’s 200-MW Bristlebush solar project, which SRP plans to use to help supply a Meta data center.

Meanwhile, APS has agreed to buy power over 20 years from the 100-MW/400-MWh White Tank storage project Strata Clean Energy plans to build near Avondale, Arizona, the solar and storage developer said Nov. 12.

Strata expects it will bring the project online in April 2027. The deal grew out of an all-source request for proposals APS issued in June 2023 for about 1 GW, including 700 MW of renewable energy, according to the Durham, North Carolina-based developer.

Separately, Strata is building the 255-MW/1,020-MWh Scatter Wash storage project, which is under a power purchase agreement with APS. Strata sold the project — set to come online in the first half of next year — to Copenhagen Infrastructure Partners in September.

Also, APS has agreed to buy the output from Strata’s planned 150-MW/600-MWh Justice energy storage project in Phoenix, the company said in July.

Strata has a 7-GWh storage pipeline in Arizona, with over 1.6 GWh of storage under construction, the company said. The company has 6 GW of solar and 22 GWh of storage in development across the United States, according to Strata.

Arizona had 923 MW of battery storage capacity as of June, with about 2,760 MW slated to come online by the end of 2025, according to the Energy Information Administration.

Arizona ranked second among all states for storage installations in the second quarter this year, according to a September report from Wood Mackenzie. In the quarter, developers installed roughly 690 MW of storage capacity in Arizona that could produce about 2,600 MWh per discharge, the consulting firm estimated.